Guess what happend! You too? You just removed it, didn’t you? You removed .NET Framework 4.5/4.5.1 from your Windows Server 2012/2012 R2 installation and did not notice the correlating features? You’re left without GUI and have no clue where to start, your friendly KB entry on technet has gone missing? Easy!

** If your current user shell doesn’t accept or recognize any commands and responds with the following error message “not recognized as an internal or external command“, start ‘cmd’ utility as other user (Local Admin). Removing the .NET Framework can mess with the current environment variable “System Variables”.